Self-piercing nut



FIG. 1 is a perspective view of the self-piercing nut;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation thereof, the rear elevation being identical;

FIG. 4 is a right-side elevation thereof, the left side elevation being identical;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a cross section taken along the line 6—6 in FIG. 2; and,

FIG. 7 is a cross section taken along the line 7—7 in FIG. 2. 

The ornamental design for a self-piercing nut, as shown and described. 